Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf4671a23c74901…

MALICIOUS

PDF

46.2 KB Created: 2020-08-09 22:40:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 532249b9f17e6c2ce7caf88a36c4d783 SHA-1: d89263553c2c30f9494b6fa725da6a10f9f84b9c SHA-256: faf4671a23c7490169e82f6c47b5d707721f857a1e545acfdd46b01e7a8e9a39
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the text 'Attestation assedic assistance maternelle pdf' and the malicious URL, suggesting a lure for unemployment-related scams. The presence of a PDF link farm heuristic further indicates a malicious intent to distribute links, likely to phishing or malware sites.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=attestation+assedic+assistance+maternelle+pdf
    • http://files.mrsararadian.com/uploads/1/3/1/4/131453676/725d0ad5d8b20d.pdf
    • http://files.womaninchair.com/uploads/1/3/2/8/132815298/5574171.pdf
    • http://files.starfishswimmers.com/uploads/1/3/1/4/131453247/f92bf1.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/vexamozi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8315/3056/files/vomunevipuwalekizesonalux.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/41602335331.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/antimicrobial_activity_of_allium_sativum.pdf
    • https://cdn.shopify.com/s/files/1/0430/1147/3571/files/kumpulan_jurnal_internasional_akuntansi_keuangan.pdf
    • https://cdn.shopify.com/s/files/1/0435/9087/7339/files/34595404538.pdf
    • https://cdn.shopify.com/s/files/1/0429/3538/6265/files/36193808012.pdf
    • https://cdn.shopify.com/s/files/1/0437/9751/2354/files/70805742657.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/95911785653.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8298/files/67735426888.pdf
    • https://www.pole-emploi.fr/accueil/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007734.bin
b98a8c96af039b1f352d28c16208e2d8c62bfeebdd2131ce782fee5eed6424a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7734 5288 bytes
font_01_sfnt_off0000891b.bin
f4319abd862f1b7bc456865a43541d9c5511ac9259f19b1bade1f59e3ea5640e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x891B 10312 bytes

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